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In LangGraph, what does a node normally return?

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advanced 30 min

Building Graphs: Frameworks and Patterns

How graphs get built: LangGraph's StateGraph anatomy, conditional edges and checkpoints, Claude Agent SDK multi-agent patterns, and the principle that frameworks force the real engineering decisions.

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A writer node needs research findings, but the researcher kept them in a local variable and the edge carries no payload. What is the correct fix?

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